Unlike some of the reviewers here who are rating a much earlier edition rather than the tenth edition), the text is quite useful and one of the more complete texts on group and team theory and and practice. If one were to want to find more in-depth information on specific theory and research, then he or she should seek out peer reviewed journals rather than an all-encompassing textbook that is designed as an introduction to group theory, which this is, albeit way overpriced...but aren't all textbooks?
The unfortunate thing for online students is that there are dozens of face-to-face scenario and role acting lessons that would be invaluable if they could be applied; however, online students are faced with posting and dialogue with other students who can barely write, command little of English grammar, and are only looking to do the minimum, check the box, and move on. Contrary to one reviewer, these are indeed place strategically throughout the text where the role-playing either leads you into the following text, or reinforces previous text by example.
Thin pages, thick book, and high price, but still an excellent reference for understanding and applying group and team theory.
One more thing: if you buy this book on Amazon, you pay 50% of what colleges charge, and most online colleges now have this in e-book form, which is almost as much as the Amazon price.